Centipede

Google's distributed coverage-guided fuzzer designed to scale across many machines with shared central corpus storage.

Centipede is a coverage-guided fuzzer from Google, introduced as the successor to libFuzzer for large-scale distributed fuzzing. Unlike libFuzzer or AFL++, which assume local corpus directories, Centipede is architected around a central corpus database — originally Google's internal infra, but adaptable to any blob store. It uses SanitizerCoverage counters and a custom feature-based corpus pruning strategy: inputs are retained only if they provide at least one unique coverage feature not covered by any other corpus entry. This produces compact, high-value corpora. Centipede is the best-fit fuzzer when you need to distribute fuzz work across hundreds of machines with a single shared corpus, avoiding the coordination overhead of AFL++'s distributed `-S` mode.